7 royal horse artillery

at harrogate can you join as 7rha or do you have to join as royal artillery then do p company to get the the royal cypher and maroon machine?
Don't talk out your Arrse if you don't know.
I'm at the AFC now under 7RHA.

You will pass in under the RA beret and capbadge, then soon after leave (2/3 weeks) you will get the maroon beret and cypher.

You then do P2, go to Colchester (unsure), do Pcoy and then re-join unit at colchester.